Orange Pi5 kernel

/* SPDX-License-Identifier: GPL-2.0 */
#undef TRACE_SYSTEM
#define TRACE_SYSTEM signal
 
#if !defined(_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ)
#define _TRACE_SIGNAL_H
 
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/tracepoint.h>
 
#define TP_STORE_SIGINFO(__entry, info)				\
<------>do {							\
<------><------>if (info == SEND_SIG_NOINFO) {			\
<------><------><------>__entry->errno	= 0;			\
<------><------><------>__entry->code	= SI_USER;		\
<------><------>} else if (info == SEND_SIG_PRIV) {		\
<------><------><------>__entry->errno	= 0;			\
<------><------><------>__entry->code	= SI_KERNEL;		\
<------><------>} else {					\
<------><------><------>__entry->errno	= info->si_errno;	\
<------><------><------>__entry->code	= info->si_code;	\
<------><------>}						\
<------>} while (0)
 
#ifndef TRACE_HEADER_MULTI_READ
enum {
<------>TRACE_SIGNAL_DELIVERED,
<------>TRACE_SIGNAL_IGNORED,
<------>TRACE_SIGNAL_ALREADY_PENDING,
<------>TRACE_SIGNAL_OVERFLOW_FAIL,
<------>TRACE_SIGNAL_LOSE_INFO,
};
#endif
 
/**
 * signal_generate - called when a signal is generated
 * @sig: signal number
 * @info: pointer to struct siginfo
 * @task: pointer to struct task_struct
 * @group: shared or private
 * @result: TRACE_SIGNAL_*
 *
 * Current process sends a 'sig' signal to 'task' process with
 * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV,
 * 'info' is not a pointer and you can't access its field. Instead,
 * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV
 * means that si_code is SI_KERNEL.
 */
TRACE_EVENT(signal_generate,
 
<------>TP_PROTO(int sig, struct kernel_siginfo *info, struct task_struct *task,
<------><------><------>int group, int result),
 
<------>TP_ARGS(sig, info, task, group, result),
 
<------>TP_STRUCT__entry(
<------><------>__field(	int,	sig			)
<------><------>__field(	int,	errno			)
<------><------>__field(	int,	code			)
<------><------>__array(	char,	comm,	TASK_COMM_LEN	)
<------><------>__field(	pid_t,	pid			)
<------><------>__field(	int,	group			)
<------><------>__field(	int,	result			)
<------>),
 
<------>TP_fast_assign(
<------><------>__entry->sig	= sig;
<------><------>TP_STORE_SIGINFO(__entry, info);
<------><------>memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
<------><------>__entry->pid	= task->pid;
<------><------>__entry->group	= group;
<------><------>__entry->result	= result;
<------>),
 
<------>TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d grp=%d res=%d",
<------><------>  __entry->sig, __entry->errno, __entry->code,
<------><------>  __entry->comm, __entry->pid, __entry->group,
<------><------>  __entry->result)
);
 
/**
 * signal_deliver - called when a signal is delivered
 * @sig: signal number
 * @info: pointer to struct siginfo
 * @ka: pointer to struct k_sigaction
 *
 * A 'sig' signal is delivered to current process with 'info' siginfo,
 * and it will be handled by 'ka'. ka->sa.sa_handler can be SIG_IGN or
 * SIG_DFL.
 * Note that some signals reported by signal_generate tracepoint can be
 * lost, ignored or modified (by debugger) before hitting this tracepoint.
 * This means, this can show which signals are actually delivered, but
 * matching generated signals and delivered signals may not be correct.
 */
TRACE_EVENT(signal_deliver,
 
<------>TP_PROTO(int sig, struct kernel_siginfo *info, struct k_sigaction *ka),
 
<------>TP_ARGS(sig, info, ka),
 
<------>TP_STRUCT__entry(
<------><------>__field(	int,		sig		)
<------><------>__field(	int,		errno		)
<------><------>__field(	int,		code		)
<------><------>__field(	unsigned long,	sa_handler	)
<------><------>__field(	unsigned long,	sa_flags	)
<------>),
 
<------>TP_fast_assign(
<------><------>__entry->sig	= sig;
<------><------>TP_STORE_SIGINFO(__entry, info);
<------><------>__entry->sa_handler	= (unsigned long)ka->sa.sa_handler;
<------><------>__entry->sa_flags	= ka->sa.sa_flags;
<------>),
 
<------>TP_printk("sig=%d errno=%d code=%d sa_handler=%lx sa_flags=%lx",
<------><------>  __entry->sig, __entry->errno, __entry->code,
<------><------>  __entry->sa_handler, __entry->sa_flags)
);
 
#endif /* _TRACE_SIGNAL_H */
 
/* This part must be outside protection */
#include <trace/define_trace.h>